Vent valve for steam heating radiators



May 23, 1939. G. LEVY 2,159,484

VENT VALVE FOR STEAM HEATING RADIATORS Filed Oct. 26, 1937 Wi -M 3 r 4INVENTOR ATTORNEY Patented May 23, 1939 UNITED STATES PATENT OFFICE VENTVALVE FOR STEAM HEATING RADIATORS 1 Claim.

My invention involves an improvement in vent valves for steam heatingradiators, and relates particularly to a device that automaticallyvaries the amount of steam vented from the valves used on radiators insteam heating systems. The opening of the vent increases with increasingpressures, which rate of increase can be varied, and the main object ofmy invention is the provision of a device to vary the amount of steamemitted from radiators at various pressures, and to increase or decreasethis steam at any desired pressures.

Further objects will in part be obvious from I the following descriptionof an illustrative embodiment of my invention, and others will bespecifically pointed out hereinbelow.

In the drawing annexed hereto, forming a part hereof,

Figure 1 is a plan view of one form of device constructed according toand embodying my invention;

Fig. 2 is a, front elevational view thereof;

Fig. 3 is a vertical section along the line 3-3 of Fig. 2; and

Fig. 4 is a horizontal section along the line 4-4 of Fig. 3.

My device comprises a casing 2, having a front cover 4 removably securedthereto as by means of screws 6. Casing 2 is open to the atmospherethrough vents 5 and 44 in the front and top thereof. The-floor 8 ofcasing 2 is provided with a threaded opening I0 whereby the casing canbe screwed or otherwise secured to an air valve component of a steamheating radiator.

' Opening I0 is provided with a roof or domeshaped housing I2, defininga second casing having an opening I4 therein in communication with theinterior of the main casing 2.

A guide bar or rod I6 is provided, slidably mounted on the top of casing2, which bar I6 has secured near the top thereof a flat spring strip I8, as by means of bolts 20. A plug of a suitable soft substance 22 issecured to the lower free end 24 of spring I8, and bears against vent I4to normally close same. A collar 26 is provided,

fitting about the bar I6 and spring I8, which collar is verticallyslidable up and down rod I6, and

means are provided, as by threaded bolt 28, for

adjusting the collar 26 in any desired position along the length of therod I6. Front cover 4 has a longitudinal opening 5 therein through whichbolt 28 projects, and the bolt may be provided with an indicator 30 tocooperate with a suitable scale 32 secured onto the cover. Scale 32 maybe shifted vertically, as desired, to set same for any particularinstallation. Vertical movement of collar 26 up and down bar I6 variesthe tension of the free end 24 of the spring I8 against the dome ventI4.

I provide, also, a second adjustment in a trans- 5 verse direction tothe first adjustment to vary this spring tension through the top ofcasing 2. Bar I6 has formed thereon a right angle extension 40 to whichthreaded bolts 42 are secured. Bolts 42 project upward through slot 44in the 10 roof of easing 2, and the bar I6 can be moved forward andbackward and secured in any desired position by means of these bolts 42.It will be seen that I have thus provided, in my device, a plurality ofmeans adjustable in transverse directions with respect to each other tovary the pressure of spring I8 against opening I4. Normally, theadjustment through movement of extension 40 and bolts 42 ispredetermined and the rod I6 locked in the desired position. 20

My device operates as follows: As soon as suflicient pressure isproduced to overcome the tension of spring I8, the free end 24 thereofis forced away from vent I4 to allow steam escape into casing 2 and intothe room. It is thus seen that for any 25 one pressure against springI8, the amount of steam escaping through vent or port I4 depends on thetension of spring I8 exerted against vent or port I4 through thesubstance 22. Also, for any one position of collar 26, a definitetension 30 can be secured of spring I8 against vent I4, the amount ofsteam vented depends on the pressure against the vent 0r port I4.

The benefits to be derived from the use of my invention are numerous,since the amount of 35 escaping steam can be determined easily andquickly through my double adjustment.

I claim:

A device for attachment to steam heating radiators comprising a casingopen to the atmosphere, 40 a second casing within the first casinghaving an opening therein defining a communication between the casings,means on said second casing to secure said device to av steam heatingradiator, means to normally close said opening in the 45 second casingcomprising a spring-supported plug bearing against the same, and aplurality of means adjustable in transverse directions with respect toeach other to increase the spring pressure against said opening, saidspring being! 50 responsive to fluid pressure changes in said secondcasing to vary the size of the said opening therein.

GUSTAVE LEVY. 55

